org.apache.openmeetings.web.admin.labels.LangForm.java Source code

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Here is the source code for org.apache.openmeetings.web.admin.labels.LangForm.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") +  you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.openmeetings.web.admin.labels;

import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.apache.openmeetings.db.dao.label.LabelDao;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormValidatingBehavior;
import org.apache.wicket.ajax.form.OnChangeAjaxBehavior;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.form.ChoiceRenderer;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.util.time.Duration;

/**
 * Modify the language selection, add/delete language
 * 
 * @author solomax, swagner
 * 
 */
public class LangForm extends Form<Void> {
    private static final long serialVersionUID = 1L;
    private DropDownChoice<Map.Entry<Long, Locale>> languages;

    static List<Map.Entry<Long, Locale>> getLanguages() {
        List<Map.Entry<Long, Locale>> list = new ArrayList<Map.Entry<Long, Locale>>();
        for (Map.Entry<Long, Locale> e : LabelDao.languages.entrySet()) {
            list.add(new AbstractMap.SimpleEntry<Long, Locale>(e.getKey(), e.getValue()));
        }
        return list;
    }

    public void updateLanguages(AjaxRequestTarget target) {
        languages.setChoices(getLanguages());
        target.add(languages);
    }

    /**
     * Render Main
     * 
     * @param id
     * @param listContainer
     * @param language
     * @param langPanel
     */
    public LangForm(String id, final WebMarkupContainer listContainer, final LangPanel langPanel) {
        super(id);
        setOutputMarkupId(true);

        languages = new DropDownChoice<Map.Entry<Long, Locale>>("language",
                new PropertyModel<Map.Entry<Long, Locale>>(langPanel, "language"), getLanguages(),
                new ChoiceRenderer<Map.Entry<Long, Locale>>() {
                    private static final long serialVersionUID = 1L;

                    @Override
                    public Object getDisplayValue(Map.Entry<Long, Locale> object) {
                        return object.getValue().getDisplayName();
                    }

                    @Override
                    public String getIdValue(Map.Entry<Long, Locale> object, int index) {
                        return "" + object.getKey();
                    }
                });

        languages.add(new OnChangeAjaxBehavior() {
            private static final long serialVersionUID = 1L;

            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                target.add(listContainer);
            }
        });
        add(languages);
        // attach an ajax validation behavior to all form component's keydown
        // event and throttle it down to once per second
        add(new AjaxFormValidatingBehavior("keydown", Duration.ONE_SECOND));
    }
}